Finding the Fourth Proportional to 5,200.72, 7,179.60 and 3,530.96

Step by Step Solution

1. Step 1: Write the proportion equation
   5,200.72 : 7,179.60 = 3,530.96 : x
2. Step 2: Convert to fraction form
   5,200.72/7,179.60 = 3,530.96/x
3. Step 3: Cross multiply
   5,200.72x = 7,179.60 × 3,530.96
4. Step 4: Simplify right side
   5,200.72x = 25,350,880.42
5. Step 5: Solve for x
   x = 25,350,880.42/5,200.72
6. Step 6: Final answer
   x = 4,874.49